<template>
  <div>
      <el-input v-model="url" type="text" style="width: 20%"/> &nbsp; &nbsp;
      <el-button @click="join" type="primary">连接</el-button>
      <el-button @click="exit" type="danger">断开</el-button>

      <br/>
      <el-input type="textarea" v-model="message" :rows="9"/>
      <el-button type="info" @click="send">发送消息</el-button>
      <br/>
      <br/>
      <el-input type="textarea" v-model="text_content" :rows="9"/>
      返回内容
      <br/>
      <br/>
  </div>
</template>

<script>
export default {
  data() {
    return {
      url: "ws://127.0.0.1:8080/websocket/message",
      message: "",
      text_content: "",
      ws: null,
    };
  },
  methods: {
    join() {
      const wsuri = this.url;
      this.ws = new WebSocket(wsuri);
      const self = this;
      this.ws.onopen = function (event) {
        self.text_content = self.text_content + "已经打开连接!" + "\n";
        console.log(self.text_content)
      };
      this.ws.onmessage = function (event) {
        console.log(event)
        self.text_content = event.data + "\n";
        console.log(self.text_content)
      };
      this.ws.onclose = function (event) {
        self.text_content = self.text_content + "已经关闭连接!" + "\n";
        console.log(self.text_content)
      };
    },
    exit() {
      if (this.ws) {
        this.ws.close();
        this.ws = null;
      }
    },
    send() {
      if (this.ws) {
        this.ws.send(this.message);
      } else {
        this.$alert('未连接到服务器！', 'websocket', {
          confirmButtonText: '确定',
          type: 'warning',
        });
      }
    },


  },
};
</script>
